My installation of Yii2 went well, I am running the local server with xampp.
Upon going to requirements.php, I have noticed this error:
Notice: Use of undefined constant INTL_ICU_VERSION - assumed ‘INTL_ICU_VERSION’ in C:\xampp\htdocs\project\vendor\yiisoft\yii2\requirements\requirements.php on line 67
I cannot find a great help online apart from websites that have the same error, any idea what this is please?